Machine for cutting glass.



G. P. HERRICK.

MACHINE FOR cumNG GL-Ass.

APPLCATION FILED AUG. 10, 1916. Patented May 22, 1911.

G, P. HERRICK.

MACHiNE FOR CUTTING GLASS.

APPLICATION FILED AUG.10, T916.

Patented May 22, 1917.

2 SHEETS-SHEET 2.

POST HEBLBJGK, 0F NEWYORK, hl'. Y.

MCHNE FOB CUTTING GLASS.

Specification of Letters latent.

Fatented 'll/lay 193W@ Application filed August 1l), 1916. Serial No. Reflet?.

To all 'whom 'it may concern:

Be it known that l, Gnuanous Pcs'r HER- nicn, a citizen ci the United States, residing at New York city, borough of Manhattan, in the county of New `York and State of New York, have invented certain new and use-ful Improvements in Machines for Cutting Glass, of which the following is a specification. i

rlFhis invention relates to improvements in machines for cutting glass, and has for its object to provide a machine employing a reciprocating cutter, in conjunction with a holder for the article so arranged as to automatically present the portion to be cut to the cutting ed 'e of the cutter, meansV also being provided ror automatically stopping the cutting action at a predetermined point.

The embodiment of the invention herein illustrated and described is adapted to cut a groove in the periphery of a lens, for the purpose ot securing the lens to amounting. l am aware that the edges of lenses have been iled and ground by various apparatus, including machines employing rotating disks. In the use of the said machines, however, with a cutting agent consisting of a pulverized abradant placed upon the edges of the disk, centrifugal action tends to throw oil the abradant, and, furthermore, the

abradant initially distributed about the en.

tire edge of tliedisk rapidly masses at the work, and as it increases in Weight falls from the disk at the point in question. The said defects of the rotary cutter or abra-dant carrier are obviated by the present improvements, which embody a reciprocating cutter, the latter by its movement in opposite directions tending to redistribute the abradant Whenever it masses at any point.

In the accompanying drawings, Figure l is a longitudinal sectional elevation of a machine embodying the improvements;

Fig. 2 is a sectional plan view of the machine, and,

lig. 3 is a view illustrating a modifica.-

tion of the means for supporting the lens or other article.

The machine trame comprises the bed plate A, upright standards B and table C.

Secured upon the bed A the base l ci an electric motor 2 or other source of power serving to rotate the cuttenactuating shaft 3. Shaft 3 is provided with an eccentric 4e, embraced by the strap 5 of an eccentric rod 6 projecting upwardly through opening 7 formed in the table C, and pivotally connected at 8 with cutter piston 9. The cutter piston 9 reciprocates within a sleeve ll) projecting upwardly from the table C and termed with a base portion '10X secured to the table by means of the screws 1l.

The cutter piston 9 is formed as a tubing having radially-projecting spaced parallel lips l2 embracing the rear edge of the cutter blade 13, and securing the said blade by means of set screws le. The cutter blade reciprocates through a slot s formed in sleeve l0. Dust shields, indicated at l5 in Figa 2, may be provided for closing the slot s in the sleeve 10 against the admission of dust or grit.

The lens holder shown per se is a compound friction-interengaged shaft, given rotary movement during the reciprocation ci the cutter blade. The member a of the com# pound sha-ft is housed in a horizontally-disposed bearing sleeve lo at the upper end of an arm 17, pivoted at 18 upon a bracket i9 secured upon the table C. The shaft member b is housed in a bearing sleeveli similar to bearing sleeve 16, and like the latter is carried at. the upper end of an arm pivotally supported upon the table C, and. rigidly connected with arm l?, if desired, The members of the compound shaft are springpressed toward each other, the member b being forwardly impelled by a light spring 20. and the member u being forwardly impelled by a heavy spring 2l, the arrangement being such that the lens L inserted between yielding friction blocks 22, one at the end of each shaft member, will be moved in the direction of the arrow (Fig. 2) until its tace meets a positioning stop screw .23 carried by a bracket 24 adjustably mounted upon the 'table C or upon any suitable support or, when no lens is in position, the shaft members will be limited by their respective stops.

The tension of spring 20 may be regulated by manipulating cap t which serves to confine the spring in the bearing sleeve 16".

The lens, 'whatever its shape may be, is maintained in engagement with the cutter blade 13 by means of springs 25, connected with the swinging arm 17 of the lens holder. Means are provided for adjusting the depth of cut, and to this end the bracket 24 is provided with an angular arm 24X extending transversely of the cutter and formed with a slot to receive the latter. The walls of the said slot in the arm 24X are in line 27 with a large belt 'pulley 28 mounted on shaft 29, the latter being journaled in suitable bearing members 30 supported by theA standards B. Shaft 29 carries a second belt pulley 31 connected by belt 32 with the large pulley 33 journaled on shaft 34. Shaft 34 is provided with a second pulley 35 connected by means of belt 36 with a pulley 37 carried at the outer end of shaft section a. Through the above driving connections the compound shaft imparts a relatively slow rotary movement to the lens simultaneously with the rapid reciprocation of the-cutter blade. l

A., lever is provided for retracting one of the shaft sections when it is desired to place a lens in clamping position or to remove a completed lens from the machine. The lever 38 is loosely mounted upon shaft section o and projects through a cam slot 39V formed in the extension 40 of bearing sleeve 16, so that when moved downwardly the walls of said slot will cause the lever to shift laterally against a collar 41 clamped at 42 upon the shaft section, thecontinued downward movement of' the lever forcing the shaft section rearwardly against the pressure of spring 21.

ln Fig. 3 l have illustrated a modification of the lens-holding device, the said modification being desirable in the grooving of lenses of irregular shape. In the modification, the supporting arms 17. (one only being shown) for the horizontal bearing sleeves 16 are each clamped upon a slide rod 43 mounted for endwise movement in the sockets of one of two sets of spaced bracket members 44, 44, fixed upon the table C, the socket of each member 44 also inclosing a coil spring 45 tending to move the lens holder toward the lcutting blade 13,

meente its mounting outwardly is increased on its up stroke. v

Means are provided for automatically signaling the operator when a lens grooving operation is completed. In the embodiment of the invention herein illustrated and described the signal is a bell 47 connected with battery E, with an adjustable cont-act stud 48 carried by bracket 10x and 'with horizontal bearing sleeve 16 of the lens holder, the battery circuit being closed to ring the bell when at the completion ofl a. grooving operation, as determined by the position of the angular arm 24x of bracket 24, bearing sleeve 16 moves into contact with the adjustable contact stud 48, as will be understood without further explanation. A. semaphore or the like may be substituted for the bell.'

What I claim and desire to secure by Letters Patent of the United States is 1. ln a machine of the character described, a rotary clamp, a cutter member, .means for imparting reciprocatory movements to said cutter member, and means for relatively moving the work clamp and cutter member transversely of the path of reciprocation of the latter.

2. ln a machine of' the character de- I scribed, a vrotary work clamp, a cutter member, means for imparting reciprocatory movements to said cutter member, means for relatively moving the work clamp and cutter member transversely' of the path of reciprocation of the latter, and means for automatically stopping said relative movement when a predeterminedv depth of cut is produced in the work.

3. ln a machine of the character described, a reciprocatory cutter member and actuating means therefor, a work holder, means for rotating the work holder, and

`supporting means for the work holder perbearing, actuating means for said piston, a signed my name in the presence of two sub- Work holder comprising separable members serbing Witnesses. spring-impelled toward each other and rotatory in unison, means ada ted to rotate GERARDUS POST HERRICK' 5 the Work holder, and means or moving the Witnesses:

Work holder transversely ofthe cutter blade. M. E. MCNINCH,

In testimony whereof I have hereunto M. A. THOMSON. 

